I picked up a 2004 JD Buck 500 a couple months ago that was stuck in 1st. When driving it acts like it wants to shift then bogs down. I've tried both shift/clutch solenoids, display, and mpem to no avail. I have read that when replacing the ignition sprag much care needs to be taken to the piston position but from what I see, mine is where it needs to be. Anyone else have this issue and find a resolution?